Body

A 500-year-old frozen Incan mummy suffered from a bacterial lung infection at the time of its death, as revealed by a novel proteomics method that shows evidence of an active pathogenic infection in an ancient sample for the first time. The full report is published July 25 in the open access journal PLoS ONE.

Modern lifestyles are generally quite different from those of our hunter-gatherer ancestors, a fact that some claim as the cause of the current rise in global obesity, but new results published July 25 in the open access journal PLoS ONE find that there is no difference between the energy expenditure of modern hunter-gatherers and Westerners, casting doubt on this theory.

For monarch butterflies, redder wings are correlated with better flight performance, according to research published July 25 in the open access journal PLoS ONE.

STONY BROOK and NEW YORK, NY– Research that used mitochondrial DNA-based testing to compare the extent of fraudulent labeling of black caviar purchased before and after international protection shows conservation benefits.

WASHINGTON, D.C., July 24, 2012 – A large clinical trial testing the long-term safety and effectiveness of a new approach for preventing HIV in women – a vaginal ring used once a month – is now underway in Africa, researchers announced today at the XIX International AIDS Conference (AIDS 2012).

Studies have shown that the offspring of mothers on a low-protein diet are more likely to develop hypertension as adults. Now, Drs. Gao, Yallampalli, and Yallampalli of the University of Texas Medical Branch at Galveston report that in rats, the high maternal testosterone levels associated with a low-protein diet are caused by reduced activity of an enzyme that inactivates testosterone, allowing more testosterone to reach the fetus and increase the offspring's susceptibility to adulthood hypertension.

Two recent studies in the July issues of the Journal of Bone and Joint Surgery (JBJS) looked at surgical site infections and hyperglycemia, the technical term for high blood glucose, or high blood sugar. According to the first study "Relationship of Hyperglycemia and Surgical-Site Infection in Orthopaedic Surgery," high blood sugar is a concern during the post-traumatic and post-operative period and it may help to preoperatively identify a population of patients with musculoskeletal injuries who are at significant risk for infectious complications.

DENVER- Arsenic is a natural element in the environment, sometimes found in air, soil and water. Arsenic contaminated water is a global threat, currently affecting more than 100 million people. Both genetic and epigenetic changes drive arsenic-induced carcinogenesis and lung cancer is one of the main consequences of this process.

DENVER- In lung cancer, patients who benefit from drugs like erlotinib will inevitably develop drug resistance. This is heralded by cancer growth and increasing tumor-related symptoms. Now scientists are investigating a second line of defense by studying the use of the novel AKT inhibitor MK-2206 in combination with erlotinib for patients whose benefit from erlotinib has begun to wane. Results of a Phase II trial will be presented during the 5th Latin American Conference on Lung Cancer.

DENVER- Scientists are looking for non-invasive ways to detect lung cancer in order to reduce the number of patients diagnosed with an advanced stage of the disease. A multiple marker test in peripheral blood is one such way. In research performed at the IRST Biosciences Laboratory in Italy, researchers looked at blood from 100 healthy donors and blood from 100 patients with non-small cell lung cancer (NSCLC). By using a combination of four specific testing techniques, they could discriminate between healthy donors and NSCLC patients.

Rapamycin, an immunosuppressant drug used in a variety of disease indications and under study in aging research labs around the world, improved function and extended survival in mice suffering from a genetic mutation which leads to dilated cardiomyopathy (DCM) and rare muscular dystrophies in humans. There are currently no effective treatment for the diseases, which include Emery-Dreifuss Muscular Dystrophy and Limb-Girdle Muscular Dystrophy. The familial form of DCM often leads to sudden heart failure and death when those affected reach their 40's and 50's.

Ann Arbor, Mich. — University of Michigan researchers have discovered a new cause of congenital myopathy: a mutation in a previously uncharacterized gene, according to research published this month in the American Journal of Human Genetics.

PROVIDENCE, R.I. [Brown University] — In the powerful sunlight of July, newly published results from a large study of people at high risk for basal cell carcinoma support the emerging view of the nation's most common cancer as a chronic ailment that often repeatedly afflicts older people but for which the seeds may be planted in youth. The research also found a new association with eczema.

A new gene therapy approach can reverse hearing loss caused by a genetic defect in a mouse model of congenital deafness, according to a preclinical study published by Cell Press in the July 26 issue of the journal Neuron. The findings present a promising therapeutic avenue for potentially treating individuals who are born deaf.

Several years ago, Prof. Michael Fainzilber and his group in the Biological Chemistry Department made a surprising discovery: Proteins thought to exist only near the cell nucleus could also be found in the far-off regions of the body's longest cells – peripheral nerve cells that extend processes called axons, reaching up to a meter in length in adult humans.